I have a hyundai tiburon and am looking for two 15 inch subs. I would like to keep it under $250 a sub. I am in the process of making a box that would give each sub just under 3ft^3. I am planning on porting the box as well. I have 2 hifonics 1200.2 Zeus amps that will put out 1200 watts bridged at 4 ohms. I was looking at 2 earthquake magma 15x, but I haven't heard much about earthquake subs. So I'm looking for other suggestions.